Pump.



H. K. HEDGES.

PUMP.

APPLICATION FILED OCT-28.1914.

Patented Apr. 16, 1918.

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PUMP.

I Specication of'Letters Patent.

Patented Apr. 16, 1918.

Application led October 28, 1914. Serial No. 868,978.

To all whom t may concern:

Be it known that I, HARRY K. HEDGES, a` citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful improvements in Pumps, of which Y the following is a specification.

out in claim.

This invention relates to pumps, and more particularly to that class of pumps designated as displacement pumps, in which compressed air is utilized for raising liquids, by application of the compressed air directly on the surface of successive charges of the liquid, suchv charges being thereby driven out of suitable displacement chambers. i

The invention has for its object to provide a pump of the general character stated, which will be relatively simple and inexpensive in construction, positive, highly eicient and economical in operation, and which will be generally superior in reliability and serviceability.

The invention contemplates the use of a plurality of submerged displacement chambers having a common distributer for the compressed air supply, the organization of the pump beingsuch that the distributer may be placed'at a distance from the submerged chambers, as for instance at the mouth of the well or any other suitable point, and connected to said chambers by means of a pipe leading to each such chamber. Control of the inlet and discharge of fluid to and from such' chambers is thus effected by the distributer through the medium of the elastic working fluid itself, the pipe of each chamber serving alternately as a supply and discharge pipe for the elastic medium used in its respective chamber.

With the above and other objects in view, the invention consist-s in the novel and useful provision, formation, combination, association and relative arrangement of parts,

members 'and features, and the general. or-

ganization and mode of application and operation thereof, all as hereinafter described, shown in the drawing, and finally pointed In the drawing:

Figure 1 is a fragmentary vertical transverse sectional view of a ortion of a deep well, such as a deep oil we ,showing the improved pump installed therein, the displacement chambers being shown as submerged in the liquid to be pumped;

Fig. 2 is a horizontal transverse sectional view taken on the line 00L-m2, Fig. 1, and

looking in the direction of the appended ar-l rows, the showing of the liquid being omitted from this figure for clearness of illustration; Fig. 3 is a view similar to Fig. 2, taken on the line o23- m3, Fig. 1, and looking in the direction of the appended arrows; and

Fig. 4 is a transverse sectional view through the distributer, taken on the line m4, Fig. 1, and looking in the direction of the appended arrow.

Corresponding parts in all the figures are designated by the same reference characters. Referring with particularity to the drawing and the embodiment of the invention therein illustrated, -A designates generally the hole of a deepwell within which liquid to be pumped is shown at a. The improved pump is shown as comprising in the main a plurality of displacement chambers B and C and a distributing timer D, the distributing timer D communicating by means 0f pipesl b and c with the displacement chambers B and C, respectively.

The displacement chambers B and C are preferably formed in a common cylindrical shell 5, a vertical transverse partition 6 dividing such shell 5 to form the chambers. In the partition 6 is formed a dlschargeduct 7 which begins at the top end wall 8 whlch closes the cylindrical shell 5 and terminates at a point slightly above the bottom end wall 9, which closes the cylindrical shell 5, as atv 10. At the terminus 10 of the duct 7 1s provided a horizontal valverunway 11 establishing communication between the duct 7 and the chamber B through a port 12 and establishing communication between. the duct 7 and the chamber C through a similar port 13, a ball valve 15, free to travel 1n the runway, serving to cover and uncover the ports 12 and '13 alternately as the intake of llquid to, or discharge .of liquid .fromthe chambers B and C is alternately performed. A plurality of bars 16 constituting a track are rovided at the point of junction of the duct and valve runway 11 to confine the ball valve 15 to the runway as 1t traverses the runway to alternately close the ports 12 and 13. A discharge pipe 17 is threaded into the top end wall 8 of the cylindrical shell 5 as at 17a. This discharge pipe communicates with and forms an extension of the duct 7. The chambers B and C are each provided with a ball check Valve 18 .and 1 9, respectively.

Seats 18a and 19-a is formed in plugs 18b and 19b respectively, such plugs being threaded into the bottom wall 9 of the cylindrical shell .5. Valve cages 18c and 19c are formed on the plugs 18b and 19", respectively, to conne the valves 18 'and 19 to the proper path of travel toward and away from their respective seats. rlhe valves and seats may be removed for cleaning or repairing when required, by removal of the plugs 18b and 19h.

'The distributing timer D comprises a casing 20 and a rotatable plug 21 in said casing, said plug being provided with means al whereby the same may be rotated in the casing. The casing is provided at the top with inlet ports 20a and 20b and exhaust .ports 20c and 20d, and at a point diametrically opposite -said inlet and exhaust ports the casing is further provided with ports 21a and 22 which communicate with the pipes?) and c respectively. The preferred form of rotatable plug is provided with 'pockets 23 and 23a at diametrically opposite points, said pockets being adapted to register alternatelywith the intake port 20a in the casing. Further pockets 24 and 24a are provided in the rotatable plug at diametrically opposite points and are adapted to be brought alternately into registration with the pipe b. A duct or bore 25 connects the pocket 23a and the pocket 24a and a similar duct or bore 26 connects the pocket 23 and the pocket 24. A diametrical bore 27 extends through the plug at an angle of approximately 90 from the bores 25 and 26, said duct or bore27 terminating at each end in a pocket 28. rlihe ports 20a, 2Oc and 21-a with the 'pockets 23, 23a, 24, 24a and 28 with their respective connecting ducts all pertain to the control of the elastic working medium in its admisison to and exhaust from the chamber B. rlFhe rotating plug is further provided with pockets 29 at diametrically opposite points, these pockets being adapted to communicate with the inlet port 20b of the casing. Further diametrically opposed pockets 30 are connected by ducts 31 and 32 each to that pocket 29 which is disposed on the opposite side of the rotatable plug from the respective pockets 30. Further diametrically opposed pockets 33 and 33a are provided in the rotatable plug and adapted to register with 'the exhaust port 2Od and the port 22, these pockets 33 and 33a being connected by a diametrically extending duct or passage 34.4

The ports 20", 20d and 22 in the casing and the pockets 29, 30, 33 and 33a with their respective ducts are features entering into the control of the admission and exhaust of the elastic working medium to lthe chambei` C through the pipe 0. Connection is made with a. suitable source of compressed air through the pipes 35 and 36 which terminate in the ports 20a and 20b of the casing 20. Exhaust pipes 37 and 38 communicate with thev ports 20c and 20d. The means for rotating the plug 21 may comprise a pulley 39 or any other suitable means for connecting with a power supply. To take up the wear the rotatable plug is preferably conical, its seat in the casing 20 being complementarily formed. rlhe plug is provided with a stem or shaft 40 to which the rotating means al is secured, adjusting devices 41 for the conical plug 21 being also provided on the shaft 40. l

rlhe operation, method of use and advantages of the improved pump will be readily understood from the foregoing description, taken in connection with the accompanying drawing and following statement:

The pump being submerged liquid will rise in that chamber in which the pressure is-relieved or which is connected through its pipe b or o with its respective exhaust pipe through the distributing timer, the liquid in entering unseating the respective valve 18 or 19. rlhe timer then being given a quarter turn communication of the chamber with its exhaust port is terminated and the chamber then communicates with its respective air supply pipe. Compressed air being then admitted, the liquid is ex elled from such chamber through the duct the valve 18 or 19 having seated as soon a's ingress of the liquid to the chamber ceases, the valve 15 being forced to that seat opposite the chamber being discharged. While 100 one chamber is thus discharging the other chamber is being allowed to communicate with its exhaust pipe through the distributer. As the control pockets and ducts forv each chamber are spaced approximately 90 105 apart on the rotor, it will thus be seen that each chamber alternately receives:l a charge of compressed air and is alternately connected through the distributer` with its respective discharge pipe. The valve 15 is 110 thus caused to rest against its seat 12 when the chamber C is discharging and the seat 13 when the chamber B is discharging. The planes of the valve seats 12 and 13 are preferably at an angle to the vertical, this ar- 115 rangement assisting in keeping the seats free from sand or other foreign matter.

Having thus described my invention, ll claim and desire to secure by Letters Patent:

ln apparatus of the character disclosed, means for controlling the distribution of a pressure medium to displacement chambers of a pump and the exhaust of the pressure medium from said chambers, comprising a 3125 casing having a lurality of inlet and lexhaust ports thereln and having other ports for communication with displacement chambers, a valve body rotatable in said casing with the last named ports and said inlet ports; and other passages for registration with said last named ports and said exhaust ports, said passages connecting said inlet ports With said last named yports and connecting said exhaust ports with said last named ports and being adapted for alternate registration With said intake and exhaust por-ts, means for operating said valve body so thatthe last named passages are alternately brought into registration with the last named ports, said last named passages having their inlet ends connecting said inlet ports and said last named ports, and being in a plane other than that in which said 15 HARRY K. HEDGES.

Witnesses:

RAYMOND IvEs BLAKEsmE,

D. M. CUMMINGS. 

